Altronix Access Control Power Supply Charger, 2 PTC Class 2 Outputs, AL175UL

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AL175UL is a power limited power supply/chargers that will convert 115VAC / 60Hz input, into two individually PTC protected 12VDC or 24VDC output, (see specifications). They are intended for use in applications requiring UL Listing for Access Control (UL294) and applications requiring an interface with Fire Alarm Control Panels. It must be installed in accordance with National and Local Electrical Codes and Regulations.


  • Input 115VAC, 50/60Hz, 0.6 amp
  • Access control trigger input


  • 12VDC or 24VDC selectable outputs
  • 1.75 amp supply current
  • Two (2) Class 2 Rated power limited outputs: Fail-Safe/Fail-Secure lock output (switched) / Auxiliary power output (un-switched)
  • PTC protected outputs, rated @ 2.5 amp
  • Filtered and electronically regulated output
  • Short circuit and thermal overload protection

Battery Backup

  • Built-in charger for sealed lead acid or gel type batteries
  • Automatic switch over to stand-by battery when AC fails
  • Maximum charge current 0.4 amp


  • AC fail supervision (form "C" contacts)
  • Supervised Fire Alarm Disconnect (Latching w/reset or Non-Latching)

Visual Indicators

  • AC input and DC output LED indicators


  • Operating temperature: 0C to 49C ambient
  • 10.75-21.5 BTU/Hr
  • System AC input VA requirement: 69VA